Lepai 2024A+

I want to replace the volume control in my Lepai LP 2024 A+. I know it's 20K but it's an odd design, so I'd like to replace it with one that can be put in with minimal problems in terms of placement. I have no idea what brand or model it is. Does anyone know? In the process I'd like to get a better one than the one that's stock.

Thanks.